MEDC XB10 - Manual (Page 5)

© Cooper MEDC 2011 12/11
4.0 MAINTENANCE
During the working life of the unit, it should require little or no maintenance. GRP will resist attack by most
acids, alkalis and chemicals and is as resistant to concentrated acids and alkalis as most metal products.
However, if abnormal or unusual environmental conditions occur due to plant damage or accident etc., then
visual inspection is recommended. If the unit requires cleaning, then only clean exterior with a damp cloth to
avoid electro-static charge build up.
The replacement of the xenon tube (see below) can be carried out by competent site personnel. Other repairs
should be undertaken by returning the unit to MEDC or by an authorised repairer or Ex equipment.
If a unit fault should occur, then the unit can be repaired by MEDC. All parts of the unit are replaceable.
If you acquired a significant quantity of units, then it is recommended that spares are also made available.
Please discuss your requirements with the Technical Sales Engineers at MEDC.
Removing / replacing xenon tube
CAUTION: Before removing the cover assembly, ensure that the power to the unit is isolated.
Note: These units each contain two separate xenon tubes which should both be replaced at the same time.
Unscrew the setscrew on the cover one full turn (2.0mm A/F hexagon key). Carefully unscrew and remove
the cover assembly (using a 120mm hook wrench if required).
Remove the old tubes by unscrewing the terminal block fixings. The replacement xenon tubes can now be
fitted (see the xenon tube installation sheet, which is supplied with the replacement tube).
To replace the cover, use the same procedure as above but in reverse manner, ensuring the cover is screwed
down tightly and ensuring there is no damage to the thread surfaces or mating faces of the cover and
enclosure. There should be a maximum gap of 0.2mm between the faces of the cover and enclosure to ensure
correct o-ring compression and maintain the IP rating of the unit.
5.0 CERTIFICATION/APPROVALS
IECEx units
Certified to IEC60079-0, IEC60079-1 and IEC60079-7
Ex d unit (IEC certification No. IECEx BAS 10.0086X)
10J:- Ex d IIB T4 (-55°C to +65°C) Gb
15J:- Ex d IIB T4 (-55°C to +50°C) Gb
Ex de unit (IEC certification No. IECEx BAS 10.0087X)
10J:- Ex de IIB T4 (-50°C to +65°C) Gb
15J:- Ex de IIB T4 (-50°C to +50°C) Gb
The IECEx certificate and product label carry the IECEx equipment protection level marking
Gb
Where Gb signifies suitability for use in a Zone 1 surface industries area in the presence of gas.
ATEX units
Certified to EN60079-0, EN60079-1 and EN60079-7
Ex d unit (ATEX certification No. BAS00ATEX2204X)
10J:- Ex d IIB T4 (-55°C to +65°C) Gb
15J:- Ex d IIB T4 (-55°C to +50°C) Gb